I have a iPhone 4 (CDMA), not jailbroken or anything. I havn't messed with anything hardware wise. I downloaded the iOS fine, then it asked me if I wanted to update to the iPhone, so i clicked yes of course, and then it says its "Verifying iPhone update with Apple". The the message comes up saying the "device isn't eligible with request build". I check out the more information button, bringing me to an Apple support page that doesn't help me whatsoever. I even tried restoring it, and it gave me the same message. I made sure my iPhone is registered with Apple. I don't understand why this is doing this. If anyone can help me it would be great. THANK YOU FIXED IT. All i had to do was power off the iPhone and then wait a few minutes and power it back on. Started applying update as soon as iTunes found it.